Unless you have a time machine I can go back in time or have found life's remote and hit the rewind button there's nothing you can do. As long as it's a distant relation I don't see anything wrong with it and most people won't either. What people don't know won't hurt them.

The most important thing is the child.

If you care for each other very much and are happy together and the relation is distant meaning you're not brother and sister or immediate cousins continue being happy, keep doing it.

If you are cousins in my opinion it is ok! in many countries it is normal! If you are brother and sister then yes that is a huge problem. What is your relation exactly?
Most of this ban on related marriages are from the medical aspect. If you have healthy children you are good to go!